Malicious PDF — malware analysis report

Static analysis result for SHA-256 19c189404a054d0d…

MALICIOUS

PDF

46.5 KB Created: 2021-05-16 21:16:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e56ecfd2a93884dea5940d4d51867e83 SHA-1: 04f17b3078ad71ec0d98e12cf2e6a098505c8e68 SHA-256: 19c189404a054d0d2d19fd7b9d372a509634d698cc28fc8465ba65c469e6bcce
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'free generator' or 'game hack' lures. The embedded document body text and heuristics indicate a social engineering attempt to trick the user into clicking these links, likely leading to a malicious download or further compromise. No scripts were extracted, but the presence of malicious URLs and the lure suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/479516143/free-minecraft-skin-creator-game-hack In PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/moon-active_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004dbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DBC 26756 bytes
SHA-256: afdb933d7d30dd30912746b9a9700e539aad4e27cc3cf8697a981bb9332d9366
font_01_sfnt_off000089dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89DD 3288 bytes
SHA-256: 9a94fd29766ab16fa830001e5c46849d6d6530bd8db209681d0dcb57fcc492f8
font_02_sfnt_off000094b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94B6 17880 bytes
SHA-256: 6ea8c897df32785154eae70acc7007925f1db6a0c6d5753d8744b2502790b6f7

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